As long as you don't need a lot of hi-res graphics. One of the no-frills icon themes installed on my Linux laptop (from which I'm typing) is 170M, just because it has a pack of icons rendered for each of the 8, 16, 18, 24, 32, 48, and 64 pixel sizes.

(And no, vector icons are not equally useful in this whole range of resolutions; you need to lower the level of detail for small resolutions to avoid pixel sludge, and increase the level of detail for high resolutions to avoid the barren look. Still, say, 3 versions in SVG format could be sufficient.)